986851 has 2 divisors, whose sum is σ = 986852. Its totient is φ = 986850.

The previous prime is 986849. The next prime is 986857. The reversal of 986851 is 158689.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 986851 - 2¹ = 986849 is a prime.

Together with 986849, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 986851.

It is not a weakly prime, because it can be changed into another prime (986857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 493425 + 493426.

It is an arithmetic number, because the mean of its divisors is an integer number (493426).

2⁹⁸⁶⁸⁵¹ is an apocalyptic number.

986851 is a deficient number, since it is larger than the sum of its proper divisors (1).

986851 is an equidigital number, since it uses as much as digits as its factorization.

986851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 37.

The square root of 986851 is about 993.4037447081. The cubic root of 986851 is about 99.5597647735.

The spelling of 986851 in words is "nine hundred eighty-six thousand, eight hundred fifty-one".